William o



(No Model.)

W. 0. WHITE.

STUMP. EXTRAGTOR AND STONE LIFTER.

No. 332,368. Patented Dec. 1-5, 1885.

IVILLIAM 0. WHITE, OF LAKE VILLAGE, N. II, ASSIGNOR TO THE AMER- ICANROCK AND TRACK LIFTER COMPANY, OF SAME PLACE.

STUMP-EXTRACTOR AND STONE-LlFTER.

SPECIFICATION forming part of Letters Patent No. 332,368, dated December15, 1885.

Application tiled October 30, 1885. Serial No. 181,364. (No model.)

To all w/tom it may concern: Be it known that I, W'ILLIAM 0. WHITE, ofLake Village, in the county of Belknap and State of New Hampshire, haveinvented certain Improvements in Stump-EXtractors and Stone-Lifters; andI do hereby declare that the following is a full and exact descriptionthereof, reference being had to the accompanying drawings, making partof this specification.

The improvements herein set forth are specially upon the stump-extractordescribed in Letters PatentNo. 227,087 granted to William H. YVright,April 27, 1880, the invention therein delineated and specified showingthe construction which forms the basis of my invention; but it is to beunderstood that any and all of the improvements herein claimed by me maybe employed in any other form of construction for the purpose to whichthey may be applicable.

Inthe accompanying drawings, Figure 1 represents a side view of themachine as improved by me; Fig. 2, a rear edge view of the same; Fig. 3,a longitudinal section thereof in a plane indicated by the line 1 1,Fig. 1; Fig. 4, a top view of the actuating-lever; Fig. 5, a viewshowing a modification of the clevis-link for attaching thesuspending-chain; Fig. 6, a view showing the device for retaining theweight at the height to which it is raised.

In the drawings, the main parts of the machine are designated asfollows: A, the U- shaped or how frame; B, the ratchet-bar moving upbetween the two sides of the said bowframe; 0, the lever by which theratchet-bar is lifted one notch at a time; and D, the pawl latch ordetent, which retains the ratchet-bar at the height to'w hich the leverlifts the same at each movement thereof.

The machine is suspended from a tripod or other support by hanging thebow end of the bow-frame in the hook ot' the support or 0th erwise.

I now proceed to describe successively the several features ofimprovement made by me. The two cross-bars E E, which connect the twosides of the bow-frame A above the lever, are constructed by me so as toserve as braces, to prevent the buckling of the two sides of the frame,and also to guard against a longitudinal sway motion thereof, which hasbeen found to take place in the former construction when very heavyloads are lifted, caused by the intense strain exerted by theliftingleveron the side from which it is suspended. The effect has beento turn the crossbars on the single bolts which connect them with theside bars, thereby bringing the side bars nearer together and bindingthe ratchet-bar between them. I obviate this difficulty by employing twobolts,c a,at each end of the cross bars, to connect them with each sideof the bow-frame, the cross-bars being made of sufficient width toseparate the bolts laterally at each end, so that they will serveas'sufficiently strong braces to prevent the swaying of the sides of thebow-frame, about as shown in the drawings. It will be seen that sincethe sides of the bow-frame necessarily remain in a vertical positionunder the powerful downward pull of a heavy weight, the crossbars cannotswerve out of their vertical and horizontal rectangular positions, whichthey must do to allow a change of angle necessary to forcing the sidebars toward each other, and hence the greater the weight of the load thegreater the security against the effect desired to be avoided. Theboltsa a are best made of steel to give proper security against bending.The suspension-straps G G, by which the lever is suspended and alsoallowed a slight swinging movement toward and from the raothet bar foralternately engaging and disengaging the lever with the teeth of theratchet bar, are pivoted to the bow-frame by a pivotbolt, b, which alsopasses through the crossbars E E and one of the sides of the bow-frame.

Another improvement consists in suspen sion pivot-trunnions c 0, cast orotherwise formed on the sides of the lever G integral or solidarytherewith, preferably made as to this part of the lever of cast-steel,which thus enables these lugs to be made solidary with the lever bycasting. This improvement is in contradistinction to separate bolts orplug screws formerly used, and which were liable to work loose or bendout of position. Below the lever, and attached to the lower ends of thebow-frame, are two other crossbars, H H, which are secured to the sideparts ofthe frame by two bolts, d d. On these cross-bars rest thesliding pawl-latch D, which retains the ratchet-bar. The spring-lever I,by the placing of which in proper position the ratchetbar is loweredwhen the lever O is vibrated, is by my improved construction heldsecurely in position, so that it never gets out of place nor between thelever and the teeth of the ratchet-bar and be cut off, as heretofore hassometimes happened. This improvement consists in providing the short endof the actuating-lever O at the upper corner with aslot, 6, into whichthe upper end of the spring-lever fits, and providing the outer end ofthe pawllatch also with a slot, f, into which the lower end of thespring-lever fits and rests. The spring-lever is thereby securely-heldin position.

To place the lower end of the spring lever in proper position, the sideg of the latch which is thus slotted is sufficiently lengthened for thepurpose, as shown in Fig. 3. Aslotted pin, h, is also provided in properposition to hold the lower end of the springlever when the liftingoperation is going on.

Any fair equivalent of the slots above specified may be used insteadthereof.

' The springlever is best made of steel wire and formed cold, as it isless liable to break, and it may be changed in form at will, if desired.

The latch-engaging spring J on the other side of the machine is made asin the former patent.

For attaching the lifting-chainK to the lower end of the ratchet-bar, Imake use of a loose clevis-link, L, enlarged at the upper end, i, andmade narrower at the lower end,j, substantially as shown inFigs. 2 and5. The enlarged upper end is loosely passed through a hole in the lowerend of the ratchet-bar, and can by its construction swing or' turnconsiderably therein, so that any sudden turning of a heavy load willnot twist or break the ratchetbar. The narrow lower end of the link isadapted to receive a link of achain edgewise, and thus to hold the chainfrom drawing through or flying out of the clevis-link. The chain isinserted and withdrawn through the upper enlarged part of theclevis'link. For

some purposes where there is no danger of a twisting strain, instead ofpassing the clevislink loosely through the ratchet-bar it may be pivotedthereto by a bolt, k, as shown in Fig. 5. Another clevis-link, M, ispivoted to the bow-frame at the lower end of one side thereof, the boltwhich supports it being for convenience and simplicity one of the boltsd d by which the lower cross-bars, H H, are secured to the bow-frame. Inconnection with the clevis-link a double or trarnmel hook, N, Fig. 6, isemployed for connecting the supportingchain with the clevis-link, to beused for supporting the load when lifted without requiring props orblocking.

I claim as my invention 1. In combination with the bow-frame A andratchet-bar B, sliding therein, the crossbars E E, connected at each endthereof to the bow-frame by two bolts, (1 a, laterally separated fromeach other, substantially as and for the purpose herein specified.

2. The lever 0, provided with suspensiontrunnions '0 0, formed solidarytherewith. in combination with the suspension-straps G G, substantiallyas and for the purpose herein specified.

3. The'combination of the spring-lever I,

the actuating-lever 0, having a slot, e, in its short end to receive theupper end of the springlever, and the pawl-latch D, having a slot, f, inone end to receive the lower end of the spring-lever, substantially asand for the purpose herein specified.

4. In combination with the ratchet-bar B

